纳米SiO_2增韧改性环氧树脂的研究  

Structure and Properties of Epoxy Resin Modified by Nano-SiO_2

作　　者：李朝阳[1] 邱大健[1] 谢国先[1] 肖祥定[1] 倪晓雪[1] 

机构地区：[1]武汉材料保护研究所,湖北武汉430030

出　　处：《材料保护》2008年第4期21-23,共3页Materials Protection

摘　　要：通过高剪切分散和催化剂的催化相结合的方法,使纳米SiO2粒子与环氧树脂发生化学键接,制得纳米SiO2改性环氧树脂。利用拉伸测试、扫描电子显微镜(SEM)、显微红外分析等手段对改性环氧树脂的性能和结构进行了研究。结果表明,纳米SiO2的化学改性在环氧树脂中引入了Si-O-C键,较大地提高了环氧树脂的拉伸强度、断裂伸长率,使环氧树脂柔韧性增强,且耐蚀性也有所提高。Nano-SiO2 as a modifying agent was dispersed and chemically bonded with epoxy resin matrix by high-shearing-strength sand milling in the presence of catalyst.The properties and structure of the modified epoxy resin were studied using a tensile tester,scanning electron microscope,and micro-infrared spectrometer.The results indicate that Si-0-C bond was formed after chemical modification of epoxy resin by nano-SiO2,which contributed to greatly increase the toughness,the tensile strength and elongation at break of the epoxy resin,while the corrosion resistance of the epoxy resin was improved,to a certain degree as well after the chemical modification.

关 键 词：环氧树脂 柔韧性 纳米SIO2 改性 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]